1004010400 has 36 divisors (see below), whose sum is σ = 2451042342. Its totient is φ = 401603840.

The previous prime is 1004010383. The next prime is 1004010433. The reversal of 1004010400 is 40104001.

It can be written as a sum of positive squares in 3 ways, for example, as 826907536 + 177102864 = 28756^2 + 13308^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 626707 + ... + 628306.

Almost surely, 2^1004010400 is an apocalyptic number.

1004010400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1004010400 is an abundant number, since it is smaller than the sum of its proper divisors (1447031942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1004010400 is a wasteful number, since it uses less digits than its factorization.

1004010400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255033 (or 1255020 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1004010400 is about 31686.1231456295. The cubic root of 1004010400 is about 1001.3350169367.

Adding to 1004010400 its reverse (40104001), we get a palindrome (1044114401).

The spelling of 1004010400 in words is "one billion, four million, ten thousand, four hundred".